Abstract: A tool, such as a hole saw, including an open end cap geometry is provided. The end cap includes spokes extending between a hub and a rim. A plurality of openings are defined between the spokes, hub and rim. The area of the openings is substantially large relative to the area of the end cap such that the end cap is relatively lightweight and provides access into the hole saw for debris removal. The spokes are shaped and positioned to provide strength to the end cap.

Abstract: A tool attachment, in particular hole saw, for a power tool having a driving axle that is drivable in oscillation. The tool attachment including a connecting device with which the tool attachment is attachable to the power tool such that the driving axle thereof and a tool axis essentially coincide. A work area has teeth, with the work area being at least partially circular in design and adjoining a hollow, cylindrical base. Openings are formed in the base, the openings constituting at least 60%, at least 80%, or at least 90% of the area of the base.

Abstract: A chuck configured to be operably coupled to a power driver having a rotatable drive spindle is provided. The chuck (100) may include a body (130) having a center axis (50) and a plurality of clamping jaws (101) configured to clamp onto a working bit. The clamping jaws (101) may be configured to angularly translate relative to the center axis towards or away from a clamping jaw point of convergence (154) to close or open a working bit opening defined by the clamping jaws (101). The clamping jaw point of convergence (154) may be on the center axis. The chuck (100) may also include a plurality of bit alignment jaws (150). The bit alignment jaws (150) may be configured to maintain the working bit within the working bit opening by being configured translate towards or away from a bit alignment jaw point of convergence (153) that is on the center axis (50) and disposed rearward of the clamping jaw point of convergence (154).

Abstract: A pocket hole jig with screw sizing system includes a pocket hole jig with a guide block reciprocally carried by a guide holder. The guide block can be raised or lowered relative the guide holder between a range of distances corresponding and calibrated to a horizontal range defined by a workpiece. A scale on a gauge member carried by the guide block is divided into a plurality of zones. An indicator is carried by the guide holder for indicating one of the plurality of zones by the position of the guide block relative the guide holder. Also provided is a series of different size screws, wherein each different size screw of the series corresponds to one of the plurality of zones.

Abstract: An oil hole reamer includes an oil passage extending inside a tool main body along an axis of the tool main body, and an oil hole extending radially outward from the oil passage to an outer circumference of the tool main body. An oil outlet of the oil hole is formed to be open toward a position corresponding to a corner at which a tip cutting edge intersects an outer-circumference cutting edge and to cause at least part of the oil outlet to be open to the outer-circumference flank face.

Abstract: Some embodiments of the present disclosure provide a drill chuck. The drill chuck includes: a drill body; jaws, partially disposed in the drill body, external threads being provided on an outer wall of the jaws; a locking member, disposed on the outer side of the drill body, the locking member being provided with internal threads, the locking member and the jaws being in threaded fit to enable the jaws to be movably disposed in the drill body; a driving assembly, disposed on an outer side of the locking member, the driving assembly being configured to drive the locking member to rotate, the driving assembly being disposed between a housing and the locking member, the housing driving the locking member to rotate by the driving assembly to enable the jaws to move in the drill body; and a locking structure, located between the housing and the jaws.

Abstract: A blade attachment-detachment assisting apparatus includes a nut rotating part having an engagement pin that engages with an engagement hole of a nut, a nut grip part that grips an annular groove of the nut, a housing that supports the nut rotating part rotatably by a predetermined angle, and a lock mechanism. The nut rotating part is capable of advancing and retreating, relative to the housing, to a protrusion position and a fixing position at which engagement between the nut grip part and the nut is kept, and is fixed to the housing with the intermediary of a spring. The lock mechanism includes an inside surface by which advancing and retreating of the nut rotating part are restricted through engagement of the nut rotating part with the housing when the housing is rotated in one direction at the fixing position to which the nut rotating part has been pushed.

Abstract: A drilling system is provided for drilling a workpiece. The drilling system includes a pattern generator configured to apply a pattern on a workpiece surface of the workpiece at a reference location relative to a target drilling location. The drilling system includes a drilling end effector, which includes a chuck configured to hold a drilling tool. The drilling end effector also includes a nosepiece configured to at least partially surround the drilling tool when the drilling tool is held by the chuck. The nosepiece includes an end portion that is configured to be held on the workpiece surface of the workpiece. The drilling end effector also includes a camera configured to acquire an image of an area of the workpiece surface that includes the pattern. The image acquired by the camera indicates whether the end portion of the nosepiece is aligned with the pattern on the workpiece surface.

Abstract: The invention relates to a tool for forming a drilled hole (B), comprising a shank that is rotatable or rotates about a tool axis (A), at least one first portion, which is rotatable or rotates about the tool axis (A), for producing and/or widening a drilled hole (B) by chip cutting, and a second portion, which rotates about the tool axis (A), for widening a drilled hole (B) without chip cutting, wherein the second portion is arranged behind the first portion in a direction of advance (V) of the tool. The invention additionally relates to a method for producing a drilled hole (B).

Abstract: A quick grip pocket hole jig system is presented having a support section having a clamp support, an end stop and a back stop. A clamping assembly is connected to the support section having a clamping rod that extends through the clamp support. A drill guide carrier having a drill guide assembly is connected to the clamping rod on a forward side of the clamp support. A clamp body having a trigger and a release mechanism is connected to the clamping rod on a rearward side of the clamp support. The clamp body is a quick grip clamp body that facilitates quick gripping of a workpiece positioned within the support section. The clamping assembly includes a return spring and a release mechanism such that when the release mechanism is actuated the drill guide carrier and the drill guide assembly are automatically moved to a non-clamping position.

Abstract: A power tool includes a housing, a motor, a spindle, a handle holder and an auxiliary handle. The housing includes a motor housing portion, a drive housing, and a mounting portion between the motor housing portion and the drive housing. The motor is located within the motor housing portion. The spindle is configured to rotate about a rotational axis in response to torque received from the motor. The handle holder is coupled to the drive housing and defines a first mounting point, and the mounting portion defines a second mounting point. The auxiliary handle is selectively attachable to each of the first and second mounting points, and the first mounting point is located at a first position along the rotational axis, and the second mounting point is located at a second position offset from the first position in a direction along the rotational axis.

Abstract: The invention relates to a conical countersink (10) having at least one main cutting edge (16-1, 16-2, 16-3) extending in an arc-shaped, in particular spiral-shaped manner.

Abstract: A hole-saw comprises a tubular body connectable at one end to inter alia a power drill and formed at its other end with an annular array of cutting teeth. A collar is positioned at the end of the tubular body remote from the cutting teeth, the perimeter of the collar extending generally normal to and beyond the perimeter of the tubular body.

Abstract: A clamping assembly includes a collet adapter and an expansion sleeve movably disposed in collet adapter and a draw pin movably disposed in the expansion sleeve. The expansion sleeve cooperates with the draw pin to define a containment system configured maintain the expansion sleeve within an axial envelope and a radial envelope within the collet adapter. Axial movement of the draw pin in the expansion sleeve within the axial envelope causes a portion of the expansion sleeve to expand radially outward to a predetermined maximum diameter to releasably clamp the collet in the collet adapter.

Abstract: A hole saw including a cylindrical body with an outer wall extending along an axis of rotation from a cap end to a cutting end. The cutting end includes a plurality of cutting teeth disposed continuously around a circumference of the cutting end. The hole saw includes at least one elongated aperture disposed along the outer wall of the cylindrical body that is configured to receive a tool for removing one or more plugs from within the cylindrical body. The at least one elongated aperture has a first slot portion disposed adjacent to the cutting end and substantially parallel to the cap end, a second slot portion connected to the first slot portion at a first end of the second slot portion, and a third slot portion coupled to the second slot portion at a second end of the second slot portion opposite the first end.

Abstract: A cutting tool has a rake face and a flank face. The flank face is provided with a coolant supply hole. A ridgeline between the rake face and the flank face forms a cutting edge. An outer shape of the coolant supply hole in a cross section orthogonal to an axis includes a first portion facing the cutting edge, and a second portion opposite to the cutting edge when viewed from the first portion. The first portion has a concave portion extending toward the second portion. The concave portion is defined by a first side portion and a second side portion facing each other, and a bottom continuous with both the first side portion and the second side portion. In the cross section, an angle formed by a tangent of the first side portion and a tangent of the second side portion is not more than 160°.

Abstract: A collet-type mechanism for releasably gripping either an external or internal target surface of a tubular workpiece includes a collet receiver defining a collet receiver contact surface configured as a curved lateral surface of a truncated right circular cone, and a segmented collet assembly comprising a plurality of collet segments. Each collet segment defines a workpiece engagement surface configured for gripping engagement with a workpiece target surface, and a collet segment contact surface configured for at least partial contacting engagement with the collet receiver contact surface. The collet segment contact surface may comprise two axially-contiguous regions, one of which corresponds to a curved lateral surface of either an oblique circular cylinder or a right circular cylinder, and the other of which corresponds to a curved lateral surface of a truncated right circular cone.

Abstract: The invention relates to a four-edged drill having two long main cutting edges, arranged in a point-symmetric manner with regard to the axis of rotation, which each extend from an outer circumferential cutting corner to a chisel edge in the middle of the drill tip, and two short main cutting edges, arranged in a point-symmetric manner with regard to the axis of rotation, which each extend from an outer circumferential cutting corner in the direction of the middle of the drill tip. According to the invention, each long main cutting edge has an outer partial cutting edge, extending from the cutting corner as far as a shoulder, and an inner partial cutting edge, extending from the shoulder as far as the chisel edge, said inner partial cutting edge having a greater cutting height (?x) than the outer partial cutting edge and the short main cutting edges.

Abstract: A drilling tool, in particular a rock drilling tool, for a portable machine tool includes a drill head, a drill shaft connected to the drill head, and a rotational axis. The drill head in one embodiment is a hard metal drill head, and the drill shaft in one embodiment is connected integrally with the drill head. The drill shaft is configured as one piece, has a guide section with guide groove winding in a spiral-shaped about the drill shaft for transporting away drilling dust, and has a securing section that is configured to detachably secure the drilling tool to a machine tool. The guide section has a diameter reinforcement at a drill head support region of the guide section neighboring the drill head.

Abstract: Hole saw adapter (10) comprised of an adapter body (12) with a first end equipped with a spindle (14) for fastening to a drive unit, such as a drilling machine, and a second end to receive a hole saw (32) and a central drill (34), in which the adapter body (12) is extended and equipped with a longitudinally running axial groove (16) where the longitudinally running axial groove (16) is at least partially formed as a cross-wise through-running open slit in the adapter body (12).